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Asaphida

Trilobita - Asaphida

Synonyms
Synonymy list
YearName and author
1864Asaphida Salter
1990Asaphida Fortey p. 560
1994Asaphida Hughes
2002Asaphida Sepkoski
2002Pseudocyclopyge Sepkoski
2011Asaphida Adrain p. 107
2020Asaphida Bignon et al. p. 1072

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Ecdysozoa
—Panarthropoda
RankNameAuthor
phylumArthropodaLatreille 1829
subphylumArtiopoda(Hou and Bergstrom)
classTrilobitaWalch 1771
subclassLibristoma
orderAsaphidaSalter 1864
orderAsaphidaSalter 1864

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Or. †Asaphida Salter 1864
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G. †Aethodionide Zhou and Ju 1983
Fm. †Anomocarellidae Hupé 1955
+
G. †Anomocarella Walcott 1905
+
†Anomocarella chinensis Walcott 1905
†Anomocarella glabera Yang et al. 1993
†Anomocarella spatha Mason 1935
†Anomocarella stenorachis Kobayashi 1961
†Anomocarella zushimiaoensis Yang et al. 1993
G. †Eoanomocarella Zhang and Wang 1985
G. †Fissanomocarella Peng et al. 1995
+
†Fissanomocarella paibiensis Peng et al. 1995
G. †Hanshania Zhang and Wang 1985
G. †Huayuania Peng et al. 1995
+
†Huayuania subcalva Peng et al. 1995
G. †Liocare Suvorova 1981
G. †Liopeishania Chang 1963
+
†Liopeishania leura Yang et al. 1993
†Liopeishania lubrica Chang 1957
†Liopeishania marginata Resser and Endo 1937
†Liopeishania spannensis Palmer and Gatehouse 1972
G. †Liopelta Suvorova 1981
G. †Luia Chang 1959
G. †Lydiaspis Suvorova 1981
G. †Megalopsis Qian 1983
G. †Neoanomocarella Xiang 1963
+
†Neoanomocarella asiatica Hsiang 1963
G. †Orthodorsum Nan and Zan 1982
G. †Paranomocarella Yang 1977
+
†Paranomocarella fortis Peng et al. 1995
†Paranomocarella pujiabaensis Yang et al. 1993
†Paranomocarella transversa Yang et al. 1993
G. †Peishania Resser and Endo 1935
+
Invalid names: Parapeishania Qiu 1983 [synonym]
G. †Peishanoides Qiu 1983
G. †Plebiellus Zhang et al. 1980
+
†Plebiellus latilimbatus Zhang et al. 1980
†Plebiellus lugouensis Yang et al. 1993
†Plebiellus obsoletus Zhang et al. 1980
Fm. †Anomocaridae Poulsen 1927
+
G. †Abharella Wittke 1984
G. †Afghanocare Wolfart 1975
+
†Afghanocare guizhouensis Yuan and Yin 1998
†Afghanocare truncatum Peng 1987
G. †Amginia Pegel 1981
G. †Anomocare Angelin 1854
+
†Anomocare convexa Walcott 1911
†Anomocare laeve Angelin 1852
†Anomocare laevis Angelin 1851
G. †Anomocarina Lermontova 1940
+
†Anomocarina absona Rozova 1964
†Anomocarina excavata Angelin 1851
†Anomocarina perrara Rozova 1964
†Anomocarina splendens Lermontova 1940
G. †Anomocarioides Lermontova 1940
+
†Anomocarioides amplus Rozova 1964
†Anomocarioides tersus Rozova 1964
G. †Anomocariopsis Sivov 1955
G. †Callaspis Zhang 1983
G. †Chondranomocare Pospelov and Fedyanina 1958
+
†Chondranomocare australis Palmer and Gatehouse 1972
G. †Dilatalimbus Ogienko 1991
G. †Elandaspis Egorova 1982
G. †Eocatuniella Egorova 1969
G. †Forchhammeria Lermontova and Chernysheva 1950
G. †Formosocephalus Pegel 1982
G. †Fuquania Zhao and Huang 1981
+
†Fuquania conica Zhao and Huang 1981
†Fuquania gelaobaoensis Zhao and Huang 1981
G. †Glyphanellus Ivshin 1953
G. †Glyphaspellus Ivshin 1952
+
†Glyphaspellus sinensis Peng et al. 2004
G. †Guizhouanomocare Li 1978
G. †Hanivella Sivov 1955
G. †Harataspis Egorova and Savitsky 1969
G. †Hunanaspis Zhou 1977
G. †Igarkiella Rozova 1964
+
†Igarkiella igarkaensis Rozova 1964
G. †Iohomia Hu 1971
G. †Irinia Egorova and Savitsky 1968
G. †Jimanomocare Yuan and Yin 1998
+
†Jimanomocare nanum Yuan and Yin 1998
G. †Juraspis Egorova 1972
G. †Kokuria Kobayashi 1935
G. †Kolbinella Repina 1960
G. †Kotuia Kobayashi 1943
G. †Lomsucaspis Lazarenko and Datsenko 1967
G. †Longxumenia Guo and Duan 1978
G. †Macrotoxus Lorenz 1906
G. †Metanomocare Lermontova 1940
+
†Metanomocare honestum Rozova 1964
†Metanomocare perbonum Rozova 1964
G. †Nadiyella Romanenko 1988
G. †Paibianomocare Peng et al. 2004
+
†Paibianomocare lineatum Peng et al. 2004
†Paibianomocare paibiense Peng et al. 2004
G. †Palella Howell 1937
G. †Paracoosia Kobayashi 1936
+
†Paracoosia huayuanensis Peng et al. 2004
†Paracoosia kingi Wittke 1984
Invalid names: Manchurocephalus Endo 1944 [synonym]
G. †Parakotuia Zhu 1960
G. †Paranomocare Li and Yin 1978
G. †Pjatkovaspellus Hajrullina 1973
G. †Qinlingialingia Jell and Adrain 2002
+
†Qinlingialingia henanensis Yang et al. 1993
†Qinlingialingia magnoccipitis Yang et al. 1993
†Qinlingialingia transversa Yang et al. 1993
Invalid names: Qinlingia Yang et al. 1993 [replaced]
G. †Rectifrontinella Drygant and Konstantynenko 2001
G. †Russiana Özdikmen 2009
+
†Russiana polita Pegel 1986
Invalid names: Scintilla Pegel 1986 [replaced]
G. †Sachaspis Egorova 1969
G. †Schoriecare Rozova 1964
+
†Schoriecare latum Lazarenko 1960
†Schoriecare ratum Rozova 1964
G. †Schoriella Sivov 1955
G. †Sivovella Poletaeva 1967
G. †Usovinurus Ivshin 1960
G. †Wutingshania Chu 1959
+
†Wutingshania lui Chu 1959
G. †Yongwolia Kobayashi 1962
Superfm. †Anomocaroidea Poulsen 1927
+
G. †Leichneyella Opik 1967
Subor. †Asaphina Salter 1864
+
Superfm. †Asaphacea Burmeister 1843
+
Invalid names: Dikelocephalinidae Kobayashi 1936 [empty]
Invalid names: Illaenacea Corda 1847 [empty]
Superfm. †Asaphoidea Salter 1864
+
Fm. †Asaphidae Burmeister 1843
+
G. †Anataphrus Whittington 1954
+
†Anataphrus borraeus Whittington 1954
†Anataphrus kermiti Amati 2014
†Anataphrus martinensis Ross and Shaw 1972
†Anataphrus megalophrys Amati 2014
†Anataphrus spurius Phleger, Jr. 1933
G. †Asaphellus Callaway 1877
+
†Asaphellus artus Robison and Pantoja-Alor 1968
†Asaphellus aspinus Robison and Pantoja-Alor 1968
†Asaphellus catamarcensis Kobayashi 1935
†Asaphellus clarksoni Tortello and Esteban 2016
†Asaphellus communis Robison and Pantoja-Alor 1968
†Asaphellus graffi Thoral 1946
†Asaphellus homfrayi Salter 1866
+
Invalid names: Hemigyraspis affinus McCoy 1849 [synonym]
†Asaphellus isabelae Meroi Arcerito et al. 2015
†Asaphellus jujuanus Harrington 1937
†Asaphellus nazarenensis Tortello and Esteban 2014
†Asaphellus pricensis Legg 1976
†Asaphellus riojanus Harrington and Leanza 1957
†Asaphellus stenorhachis Harrington 1938
†Asaphellus trinodosus Chang 1949
Invalid names: Asaphelloides Kobayashi 1937 [synonym], Asaphoon Hutchison and Ingham 1967 [synonym], Hemigyraspis Raymond 1910 [synonym], Megalaspidella Kobayashi 1937 [synonym], Plesiomegalaspis Thoral 1946 [synonym]
Subfm. †Asaphinae Burmeister 1843
+
G. †Asaphus Brongniart 1822
+
Subg. †Asaphus (Ampyx) Dalman 1827
Subg. †Asaphus (Asaphus) Brongniart 1822
Subg. †Asaphus (Neoasaphus) Jaanusson 1953
Subg. †Asaphus (Onchometopus) Schmidt 1898
Subg. †Asaphus (Platypeltis) Callaway 1877
Subg. †Asaphus (Subasaphus) Balashova 1976
+
Invalid names: Asaphus (Platyasaphus) Ivantsov 2000 [synonym]
†Asaphus caribouensis Walcott 1884
†Asaphus caudatus Sedgwick 1845
†Asaphus curiosa Billings 1865
†Asaphus expansus Wahlenberg 1821
†Asaphus gigas Dekay 1824
†Asaphus heckeri Ivantsov 2000
†Asaphus homfrayi Salter 1866
Invalid names: Schizophorus Balashova 1953 [synonym]
G. †Lonchobasilicus Zhou 1980
+
Invalid names: Sinomegalaspis Qu 1982 [synonym]
G. †Ogygitella Harrington and Leanza 1957
+
†Ogygitella australis Harrington and Leanza 1957
G. †Pseudobasilicus Reed 1930
+
†Pseudobasilicus brachyrachis Törnquist 1884
†Pseudobasilicus fortis Webby 1973
†Pseudobasilicus lawrowi Schmidt 1898
†Pseudobasilicus nobilis Barrande 1846
G. †Pseudomegalaspis Jaanusson 1953
+
†Pseudomegalaspis formosus Törnquist 1884
†Pseudomegalaspis patagiata Törnquist 1884
G. †Atopasaphus Shergold 1971
+
†Atopasaphus petasatus Shergold 1971
G. †Aulacoparia Hintze and Jaanusson 1956
+
Subg. †Aulacoparia (Aulacoparia) Hintze and Jaanusson 1956
+
Subg. †Aulacoparia (Aulacoparina) Hintze and Jaanusson 1956
+
G. †Australopyge Harrington and Leanza 1957
+
†Australopyge acanthura Harrington and Leanza 1957
†Australopyge russoi Harrington and Leanza 1957
G. †Basilicus Salter 1849
+
Subg. †Basilicus (Basiliella) Kobayashi 1934
+
+
Invalid names: Asaphus marginalis Hall 1847 [synonym]
†Basiliella karmbergensis Edgecombe and Webby 2007
†Basilicus asper Zhou and Fortey 1986
†Basilicus jinlini Zhou and Fortey 1986
†Basilicus laeviculus Raymond 1925
†Basilicus mckeei Ross 1970
†Basilicus tyrannus Murchison 1839
Invalid names: Carinobasiliella Pribyl and Vanek 1980 [synonym], Dolerobasilicus Harrington and Leanza 1942 [synonym], Mekynophrys Harrington 1938 [synonym], Parabasilicus Kobayashi 1934 [synonym]
G. †Bellefontia Walcott 1924
+
†Bellefontia ibexensis Hintze 1953
G. †Birmanites Sheng 1934
+
†Birmanites akchiensis Ghobadi Pour et al. 2011
†Birmanites brevicus Xiang and Zhou 1987
†Birmanites latus Angelin 1851
†Birmanites qilangensis Zhang 1981
G. †Bohemopyge Pribyl 1951
G. †Borogothus Tjernvik 1956
G. †Brachyaspis Salter 1866
+
†Brachyaspis alacer Billings 1866
†Brachyaspis altilis Raymond 1912
†Brachyaspis australis Whittington 1954
†Brachyaspis leptaenarum Warburg 1925
G. †Branisaspis Pribyl and Vanek 1980
G. †Burminresia Laurie and Shergold 1996
+
†Burminresia prima Laurie and Shergold 1996
G. †Ectenaspis Raymond 1920
+
†Ectenaspis beckeri Slocom 1913
†Ectenaspis burkhalteri Amati 2014
†Ectenaspis homalonotoides Walcott 1879
G. †Emanuelaspis Laurie and Shergold 1996
+
Subg. †Emanuelaspis (Emanuelaspis) Laurie and Shergold 1996
+
†Emanuelaspis (Emanuelaspis) nicolli Laurie and Shergold 1996
Subg. †Emanuelaspis (Emanuelina) Laurie and Shergold 1996
+
†Emanuelaspis (Emanuelina) expansa Laurie and Shergold 1996
†Emanuelaspis (Emanuelina) peculiaris Laurie and Shergold 1996
G. †Eoasaphus Kobayashi 1936
+
Invalid names: Anorina Whitehouse 1936 [objective synonym]
G. †Eoisotelus Wang 1938
+
†Eoisotelus orientalis Wang 1938
+
Invalid names: Eoisotelus mathieui Chang 1950 [synonym], Eoisotelus suni Chang 1950 [synonym]
G. †Fuyunia Hsiang and Zhang 1981
G. †Gerasaphes Clarke 1897
G. †Gogiura Rozova and Dubatolova 1985
G. †Griphasaphus Opik 1967
G. †Guohongjunia Zhang 1999
+
G. †Homalopyge Jaanusson 1956
G. †Hunnebergia Tjernvik 1956
G. †Isabelinia Rabano 1989
+
†Isabelinia glabrata Salter 1853
Subfm. †Isotelinae Angelin 1854
+
G. †Golasaphus Shergold 1971
+
†Golasaphus momedahensis Shergold 1971
G. †Hoekaspis Kobayashi 1937
+
†Hoekaspis schlagintweiti Harrington and Leanza 1942
G. †Isoteloides Raymond 1910
+
†Isoteloides canalis Whitfield 1886
+
Invalid names: Isoteloides latimarginatus Fortey 1979 [synonym], Isoteloides whitfieldi Raymond 1910 [synonym]
†Isoteloides flexus Hintze 1953
†Isoteloides peri Fortey 1979
†Isoteloides polaris Poulsen 1927
G. †Isotelus Dekay 1824
+
†Isotelus aktchokensis Weber 1948
†Isotelus bradleyi Amati 2014
†Isotelus copenhagenensis Ross and Shaw 1972
†Isotelus frognoensis Owen 1981
†Isotelus giganteus Raymond 1931
†Isotelus gigas Dekay 1824
†Isotelus harrisi Raymond 1905
+
Invalid names: Isotelus platymarginatus Raymond 1910 [synonym]
†Isotelus iowensis Owen 1852
†Isotelus kimmswickensis Bradley 1930
†Isotelus maximus Locke 1838
†Isotelus megistos Locke 1842
†Isotelus parvirugosus Chatterton and Ludvigsen 1976
†Isotelus platyrhachis Steinhardt 1874
†Isotelus rejuvenis Raymond 1920
†Isotelus rex Rudkin et al. 2003
†Isotelus simplex Raymond and Narraway 1910
†Isotelus skapaneidos Amati 2014
†Isotelus susae Whitfield 1882
†Isotelus violaensis Amati 2014
†Isotelus walcotti Walcott 1918
+
Invalid names: Isotelus planus De Mott 1963 [synonym]
Invalid names: Homotelus Raymond 1920 [synonym]
G. †Kierarges Corbacho 2014
+
†Kierarges morrisoni Corbacho 2014
G. †Megalaspides Brögger 1886
+
†Megalaspides striatellus Fortey 1975
Invalid names: Lannacus Tjernvik 1956 [synonym]
G. †Megistaspis Jaanusson 1956
+
Subg. †Megistaspis (Ekeraspis) Tjernvik 1956
Subg. †Megistaspis (Megistaspidella) Jaanusson 1956
Subg. †Megistaspis (Megistaspis) Jaanusson 1956
Subg. †Megistaspis (Paramegistaspis) Balashova 1976
+
Invalid names: Megistaspis (Varvaspis) Tjernvik and Johansson 1980 [objective synonym]
Subg. †Megistaspis (Rhinoferus) Balashova 1976
†Megistaspis limbatus Boeck 1838
Invalid names: Megalaspis Angelin 1851 [replaced]
G. †Notopeltis Harrington and Leanza 1957
+
†Notopeltis orthometopa Harrington 1938
+
Invalid names: Megalaspidella pumila Harrington 1938 [synonym]
G. †Isyrakopeltis Rosov and Dubatolova 1985
G. †Kainisiliellina Baldis and González 1987
+
†Kainisiniella cuyana Baldis and González 1987
G. †Kayseraspis Harrington 1938
+
Subg. †Kayseraspis (Plesiomegalaspis) Thoral 1946
†Kayseraspis asaphelloides Harrington 1938
†Kayseraspis brackebuschi Harrington 1938
G. †Klabavia Pribyl and Vanek 1969
G. †Kobayashia Harrington 1938
G. †Lachnostoma Ross 1951
+
†Lachnostoma disputa Fortey 1975
†Lachnostoma platypyga Fortey and Bruton 2013
G. †Lisogorites Chugaeva 1958
+
†Lisogorites mistus Zhou et al. 1995
†Lisogorites tarimensis Zhang 1981
+
Invalid names: Tangyaia shaerganensis Zhang 1981 [synonym]
Invalid names: Tangyaia Lu 1974 [synonym], Trigonoaspis Koroleva 1961 [synonym]
G. †Lycophron Fortey and Shergold 1984
+
†Lycophron freemani Laurie 2006
†Lycophron rex Fortey and Shergold 1984
G. †Metaptychopyge Balashova 1964
+
†Metaptychopyge truncata Nieszkowski 1895
G. †Metayuepingia Liu 1977
+
†Metayuepingia riccardii Tortello and Esteban 2016
G. †Nahannia Chatterton and Ludvigsen 1976
+
†Nahannia humilisulcata Chatterton and Ludvigsen 1976
†Nahannia mediocrisulcata Chatterton and Ludvigsen 1976
G. †Neopeltis Zhang 1983
G. †Nerudaspis Pribyl and Vanek 1965
G. †Nileoides Raymond 1920
+
†Nileoides perkinsi Raymond 1910
G. †Ningkianites Lu 1975
+
G. †Niobides Harrington and Leanza 1957
+
†Niobides armatus Harrington and Leanza 1957
G. †Niobina Lake 1946
+
†Niobina taurina Harrington and Leanza 1957
Subfm. †Niobinae Jaanusson 1959
+
G. †Gog Fortey 1975
+
†Gog catillus Fortey 1975
†Gog yangtzeensis Lu 1975
G. †Lapidaria Tjernvik 1956
+
†Lapidaria rugosa Tjernvik 1956
†Lapidaria tenella Tjernvik 1956
G. †Niobe Angelin 1851
+
Subg. †Niobe (Niobella) Reed 1931
Subg. †Niobe (Proxiniobe) Hoel 1999
†Niobe feitleri Holliday 1942
†Niobe flabellifera Fortey 1975
†Niobe frontalis Dalman 1827
†Niobe groenlandica Poulsen 1937
†Niobe morrisi Billings 1865
†Niobe occulta Fortey 1975
†Niobe quadraticaudata Billings 1865
†Niobe vogti Strand 1948
Subfm. †Nobiliasaphinae Balashova 1971
+
G. †Liomegalaspides Lu and Chang 1974
+
†Liomegalaspides major Zhang 1981
+
Invalid names: Liomegalaspides similis Lu 1975 [synonym]
G. †Mioptychopyge Zhou et al. 1998
+
†Mioptychopyge suni Endo 1932
†Mioptychopyge thebawi Reed 1915
G. †Opsimasaphus Kielan 1960
+
†Opsimasaphus jaanussoni Kielan 1960
†Opsimasaphus radiatus Salter 1866
G. †Nobiliasaphus Pribyl and Vanek 1965
G. †Norasaphus Fortey and Shergold 1984
+
Subg. †Norasaphus (Norasaphites) Fortey and Shergold 1984
+
†Norasaphus (Norasaphites) monroeae Fortey and Shergold 1984
†Norasaphus (Norasaphites) vesiculosus Fortey and Shergold 1984
Subg. †Norasaphus (Norasaphus) Fortey and Shergold 1984
+
†Norasaphus (Norasaphus) skalis Fortey and Shergold 1984
Subg. †Norasaphus (Shergoldina) Feist and Talent 2000
+
†Norasaphus (Shergoldina) greenvalensis Feist and Talent 2000
G. †Norinia Troedsson 1937
+
†Norinia cucullata Halle 1927
G. †Ogmasaphus Jaanusson 1953
+
†Ogmasaphus costatus Jaanusson 1953
†Ogmasaphus jaanussoni Henningsmoen 1960
†Ogmasaphus kiaeri Henningsmoen 1960
†Ogmasaphus multistriatus Henningsmoen 1960
†Ogmasaphus praetextus Törnquist 1884
†Ogmasaphus stoermeri Henningsmoen 1960
G. †Ogyginus Raymond 1912
+
†Ogyginus armoricanus Tromelin and Lebesconte 1876
Subfm. †Ogygiocaridinae Raymond 1937
+
G. †Merlinia Fortey and Owens 1978
+
†Merlinia major Salter 1866
†Merlinia megacantha Leanza 1941
†Merlinia murchisoniae Murchison 1839
+
Invalid names: Merlinia menapiensis Hicks 1873 [synonym], Merlinia solvensis Hicks 1873 [synonym]
†Merlinia rhyakos Fortey and Owens 1978
†Merlinia selwynii Salter and in Murchison 1859
Subfm. †Ogygiocarinae Raymond 1913
+
G. †Asaphiscus Meek 1873
+
Subg. †Asaphiscus (Blainia) Walcott 1916
†Asaphiscus agatho Walcott 1916
†Asaphiscus anaxis Walcott 1916
†Asaphiscus calanus Walcott 1916
†Asaphiscus duris Walcott 1916
†Asaphiscus florus Walcott 1916
†Asaphiscus glaber Walcott 1916
†Asaphiscus iddingsi Walcott 1911
†Asaphiscus laeviceps Walcott 1884
†Asaphiscus minor Walcott 1916
†Asaphiscus wheeleri Meek 1873
G. †Maryvillia Walcott 1916
+
†Maryvillia arion Walcott 1916
†Maryvillia omega Lochman and Hu 1962
†Maryvillia triangularis Lochman and Duncan 1944
G. †Orria Walcott 1916
+
†Orria elegans Walcott 1916
G. †Ogygiocaris Angelin 1854
+
†Ogygiocaris araiorhachis Harrington and Leanza 1957
†Ogygiocaris concentrica Funquist 1919
†Ogygiocaris dilatata Brünnich 1781
†Ogygiocaris iruyensis Tortello and Esteban 2016
†Ogygiocaris sarsi Angelin 1878
+
†Ogygiocaris sarsi delicata Henningsmoen 1960
†Ogygiocaris sarsi regina Henningsmoen 1960
†Ogygiocaris sarsi sarsi Angelin 1878
†Ogygiocaris sarsi lata Hadding 1913
†Ogygiocaris striolata Henningsmoen 1960
+
†Ogygiocaris striolata striolata Henningsmoen 1960
†Ogygiocaris striolata corrugata Henningsmoen 1960
Invalid names: Araiocaris Pribyl and Vanek 1980 [synonym], Ogygiocarella Harrinton and Leanza 1957 [synonym]
G. †Ogygites Tromelin and Lebescote 1876
G. †Ogygitoides Kobayashi 1934
G. †Onchometopus Schmidt 1898
+
†Onchometopus obtusus Hall 1847
G. †Parabellefontia Hintze 1953
+
†Parabellefontia concinna Hintze 1953
G. †Paramegalaspis Thoral 1935
+
Invalid names: Dolerasaphus Harrington and Leanza 1957 [synonym]
G. †Paratamdaspis Ergaliev 2001
+
†Paratamdaspis longiformis Ergaliev 2001
G. †Penchiopsis Lu 1976
G. †Plectasaphus Jaanusson 1953
+
†Plectasaphus plicicostis Törnquist 1884
G. †Popovkiaspis Balashova 1966
+
†Popovkiaspis pogrebowi Lamansky 1905
G. †Presbynileus Hintze 1954
+
†Presbynileus elongatus Hintze 1953
†Presbynileus ibexensis Hintze 1953
†Presbynileus utahensis Hintze 1953
Invalid names: Paranileus Hintze 1953 [replaced]
G. †Priceaspis Legg 1976
+
Subg. †Priceaspis (Priceaspis) Legg 1976
+
Invalid names: Fitzroyaspis Legg 1976 [synonym]
G. †Proasaphus Balashova 1966
+
†Proasaphus primus Balashova 1966
Subfm. †Promegalaspidinae Jaanusson 1959
+
G. †Promegalaspides Westergård 1939
+
Subg. †Promegalaspides (Borogothus) Tjernvik 1956
†Promegalaspides kinnekullensis Westergard 1939
G. †Proscharyia Peng 1990
G. †Protopresbynileus Hintze 1954
+
†Protopresbynileus divergens Fortey et al. 2024
Invalid names: Pseudonileus Hintze 1953 [replaced]
G. †Protoptychopyge Balashova 1959
G. †Pseudasaphus Schmidt 1901
+
†Pseudasaphus tecticaudatus Steinhardt 1874
G. †Pseudoasaphus Schmidt 1901
+
†Pseudoasaphus globifrons Eischwald 1857
†Pseudoasaphus limatus Jaanusson 1953
G. †Pseudogriphasaphus Peng 1992
+
G. †Pseudogygites Kobayashi 1934
+
+
Invalid names: Pseudogygites canadensis Chapman 1856 [synonym]
G. †Pseudoptyocephalus Legg 1976
+
G. †Psilocephalina Hsu 1948
+
G. †Ptychopyge Angelin 1854
+
Subfm. †Ptychopyginae Balashova 1964
+
G. †Eisarkaspis Laurie 2006
+
†Eisarkaspis etheridgei Laurie 2006
†Eisarkaspis irritans Fortey and Shergold 1984
G. †Madiganaspis Laurie 2006
G. †Paraptychopyge Balashova 1964
G. †Ptyocephalus Agassiz 1843
+
†Kirkella declevita Ross 1951
†Ptyocephalus acclivus Hintze 1953
†Ptyocephalus vigilans Whittington 1948
Invalid names: Kirkella Kobayashi 1942 [synonym]
G. †Sanbernardaspis Acenolaza 1973
G. †Stegnopsis Whittington 1965
+
†Stegnopsis erythragora Amati 2014
†Stegnopsis huttoni Billings 1865
†Stegnopsis solitarius Whittington 1965
G. †Stenorhachis Hintze and Jaanusson 1956
+
G. †Suriaspis Acenolaza and Rabano 1990
G. †Tchukeraspis Rosov and Dubatolova 1985
G. †Thysanopyge Kayser 1898
+
†Thysanopyge argentina Kayser 1898
†Thysanopyge clavijoi Harrington and Leanza 1957
†Thysanopyge latelimbata Harrington and Leanza 1957
†Thysanopyge taurinus Harrington 1937
Invalid names: Basilicoides Harrington 1937 [synonym]
G. †Trigonocerca Ross 1951
+
†Trigonocerca typica Ross 1951
G. †Trigonocercella Hintze 1953
+
†Trigonocercella acuta Hintze 1953
G. †Valdaites Balashova 1976
+
†Valdaites aciculatus Angelin 1854
+
Invalid names: Asaphus densistriatus Törnquist 1884 [synonym], Asaphus undulatus Steinhardt 1874 [synonym]
†Valdaites limatus Jaanusson 1953
G. †Vogdesia Raymond 1910
+
†Vogdesia bearsi Raymond 1905
†Vogdesia bromidensis Esker, III 1964
†Vogdesia gigas Raymond 1920
†Vogdesia minnesotensis Foerste 1886
†Vogdesia obtusus Hall 1847
†Vogdesia vigilans Meek and Worthen 1870
G. †Xenasaphus Jaanusson 1953
+
Subg. †Xenasaphus (Delphasaphus) Ivantsov 2000
+
Subg. †Xenasaphus (Xenasaphus) Jaanusson 1953
+
G. †Xenostegium Walcott 1924
+
†Xenostegium shepardi Raymond 1922
G. †Zhenganites Yin 1978
+
Invalid names: Eosoptychoparia Zhang 1963 [synonym], Eosoptychopyge Zhang 1981 [synonym]
G. †Zuninaspis Harrington and Leanza 1957
+
†Zuninaspis acuminata Harrington and Leanza 1957
Invalid names: Ogygiinae Raymond 1913 [empty]
Fm. †Ceratopygidae Raymond 1913
+
G. †Ajacicrepida Wengtang and Jell 1987
G. †Asiocephalus Palmer 1968
+
†Asiocephalus sulcatus Lisogor 1970
G. †Boschchekulia Lermontova 1951
G. †Ceratopyge Hawle and Corda 1847
+
†Ceratopyge forficuloides Harrington and Leanza 1957
†Ceratopyge mareki Mergl 1984
G. †Charchaqia Troedsson 1937
+
†Charchaqia halli Jago 1991
†Charchaqia norini Troedsson 1937
Invalid names: Aplotaspis Henderson 1976 [synonym]
G. †Diceratopyge Troedsson 1937
+
†Diceratopyge distalis Peng 1992
†Diceratopyge elongata Peng 1983
†Diceratopyge mobergi Troedsson 1937
†Diceratopyge obesa Peng 1983
G. †Dichelepyge Harrinton and Leanza 1952
+
†Dichelepyge pascuali Harrington and Leanza 1952
Invalid names: Bicornipyge Lisogor 1961 [synonym]
G. †Dipleuropyge Lermontova 1951
G. †Haniwoides Kobayashi 1953
+
†Haniwoides brevicus Zhang et al. 1980
†Haniwoides longus Kobayashi 1935
†Haniwoides varia Shergold 1980
Invalid names: Yuepingia Lu 1956 [synonym]
G. †Hedinaspis Troedsson 1951
+
†Hedinaspis regalis Troedsson 1937
†Hedinaspis shengi Lu 1964
†Hedinaspis uniformis Bao and Jago 2000
Invalid names: Hedinia Troedsson 1937 [replaced]
G. †Hunanopyge Peng 1984
+
†Hunanopyge sejuncta Peng 1984
G. †Hysterolenus Moberg 1898
Subfm. †Iwayaspidinae Kobayashi 1962
+
G. †Cermatops Shergold 1980
+
†Cermatops vieta Shergold 1980
G. †Kaltykelina Petrunina 1973
G. †Kaufmannella Sdzuy 1979
G. †Kogenium Kobayashi 1935
G. †Macropyge Stubblefield 1927
+
Subg. †Macropyge (Promacropyge) Lu 1964
+
†Macropyge (Promacropyge) longa Lu and Lin 1984
Invalid names: Aksapyge Lisogor 1977 [synonym]
Invalid names: Lichapyge Callaway 1874 [synonym]
G. †Macropygella Rosov and Dubatolova 1985
G. †Mansuyella Endo 1937
G. †Nannopeltis Harrington and Leanza 1957
+
†Nannopeltis modesta Harrington 1938
G. †Neohedinaspis Xiang and Zhang 1984
G. †Onychopyge Harrington 1938
+
†Onychopyge acenolazai Tortello and Esteban 2016
†Onychopyge argentina Harrington and Leanza 1957
†Onychopyge gonzalezae Tortello and Esteban 2016
†Onychopyge longispina Harrington and Leanza 1957
†Onychopyge plagiacantha Harrington and Leanza 1957
†Onychopyge riojana Harrington 1938
†Onychopyge sculptura Robison and Pantoja-Alor 1968
Invalid names: Prionopyge Harrington and Leanza 1942 [objective synonym]
G. †Proceratopyge Wallerius 1895
+
†Proceratopyge canadensis Chatterton and Ludvigsen 1998
†Proceratopyge conifrons Wallerius 1895
†Proceratopyge distensa Lu and Lin 1989
†Proceratopyge fuyangensis Lu and Lin 1987
†Proceratopyge incondita Harrington and Leanza 1957
†Proceratopyge longa Bao and Jago 2000
†Proceratopyge mirabilis Lu and Lin 1989
†Proceratopyge nathorsti Westergard 1922
†Proceratopyge promisca Choi et al. 2008
†Proceratopyge rectispinata Troedsson 1937
+
Invalid names: Lopnorites fragilis Troedsson 1937 [synonym], Proceratopyge cylindrica Chien 1961 [synonym]
†Proceratopyge tenuita Lazarenko 1966
†Proceratopyge zhejiangensis Lu and Lin 1989
G. †Pseudohysterolenus Harrington and Leanza 1957
+
†Pseudohysterolenus infidus Harrington and Leanza 1957
G. †Pseudoyuepingia Chien 1961
+
†Pseudoyuepingia asaphoides Kobayashi 1962
†Pseudoyuepingia brevica Lu and Lin 1980
†Pseudoyuepingia elongata Lu and Lin 1989
†Pseudoyuepingia intermedia Lu and Lin 1989
†Pseudoyuepingia jiantangensis Duan et al. 1999
†Pseudoyuepingia zhejiangensis Lu and Lin 1980
Invalid names: Iwayaspis Kobayashi 1960 [synonym]
G. †Tamdaspis Lisogor 1977
+
†Tamdaspis cylindrica Qian and Qiu 1983
†Tamdaspis intermedia Qian and Qiu 1983
†Tamdaspis tamdensis Lisogor 1977
Invalid names: Psiloyuepingia Qian and Qiu 1983 [synonym]
G. †Tropidopyge Harrington and Kay 1951
+
†Tropidopyge broeggeri Moberg and Segerberg 1906
†Tropidopyge laevis Ergaliev 1980
G. †Yuepingioides Lu and Lin 1984
+
†Yuepingioides ocellata Lu and Lin 1980
†Yuepingioides parallelus Lu and Lin 1983
Fm. †Remopleurididae Hawle and Corda 1847
+
G. †Aktugaiella Ergaliev 1980
+
†Aktugaiella acuminulata Ergaliev 1980
†Aktugaiella assurgentis Ergaliev 1980
G. †Apatokephalina Sivov 1955
G. †Apatokephaloides Raymond 1924
+
†Apatokephaloides pauper Billings 1865
G. †Apatokephalops Lu 1975
+
Invalid names: Aristokainella Zhiyi and Jinlin 1978 [synonym], Wanliangtingia Lu and Chang 1974 [synonym]
G. †Apatokephalus Brögger 1896
+
†Apatokephalus canadensis Kobayashi 1953
†Apatokephalus dagmarae Mergl 1984
†Apatokephalus exiguus Harrington and Leanza 1957
†Apatokephalus nyaicus Rozova 1968
†Apatokephalus rugosus Tortello and Esteban 2016
†Apatokephalus sarculum Fortey and Owens 1991
†Apatokephalus serratus Boeck 1838
†Apatokephalus tibicen Pribyl and Vanek 1980
G. †Artokephalus Sivov and Egorova 1955
G. †Blosyropsis Whittington 1965
+
†Blosyropsis billingsi Whittington 1965
G. †Brachypleura Angelin 1854
+
†Brachypleura cordata Nikolaisen 1983
†Brachypleura sexlineata Angelin 1851
Invalid names: Sculptaspis Nikolaisen 1983 [synonym]
G. †Deanokephalus Pillet 1992
G. †Diplapatokephalus Raymond 1937
+
†Diplapatokephalus finalis Walcott 1884
G. †Dislobosaspis Yin et al. 1999
+
G. †Eoapatokephalus Rozova 1983
G. †Eorobergia Cooper 1953
+
†Eorobergia breviceps Raymond 1925
†Eorobergia grandis Whittington 1965
†Eorobergia marginalis Raymond 1925
†Eorobergia striata Petrunina 1990
G. †Haniwa Kobayashi 1933
+
†Haniwa sosanensis Kobayashi 1933
G. †Hexacopyge Yuan and Zhou
+
†Hexacopyge nasuta Lu 1957
G. †Hukasawaia Kobayashi 1953
G. †Hypodicranotus Whittington 1952
+
†Hypodicranotus striatulus Walcott 1875
+
Invalid names: Hypodicranotus missouriensis Foerste 1920 [synonym]
G. †Ivshinaspis Petrunina 1973
+
†Ivshinaspis crispa Petrunina 1973
†Ivshinaspis formosa Duan et al. 1999
†Ivshinaspis reticulata Bao and Jago 2000
G. †Jiia Zhou and Zhang 1978
G. †Kainella Walcott 1925
+
†Kainella billingsi Walcott 1924
†Kainella conica Kobayashi 1935
†Kainella eleutherolfi Pratt 1988
†Kainella flagricauda White 1874
+
Invalid names: Kainella inexpectans Walcott 1884 [synonym]
†Kainella meridionalis Kobayashi 1935
†Kainella teiichii Vaccari and Waisfeld 2010
G. †Lacorsalina Bursky 1970
+
†Lacorsalina bellatula Fortey 1980
G. †Lingukainella Kobayashi 1953
G. †Lohanpopsis Lu 1965
G. †Loshanella Lu 1975
G. †Mendosina Shergold 1975
+
†Mendosina laciniosa Shergold 1971
G. †Menoparia Ross 1951
+
†Menoparia elegans Dean 1989
†Menoparia genalunata Ross 1951
†Menoparia lunalata Ross 1953
G. †Naustia Ludvigsen 1982
+
†Naustia colombiana Harrington and Kay 1951
G. †Oculeus Poletaeva and Romanenko 1970
G. †Portentosus Egorova 1955
G. †Praepatokephalus Lochman 1964
G. †Proapatokephalops Rozova 1960
G. †Pseudokainella Harrington 1938
+
†Pseudokainella armatus Hintze 1953
†Pseudokainella keideli Harrington 1938
†Pseudokainella lata Kobayashi 1935
†Pseudokainella pustulosa Harrington and Leanza 1957
Invalid names: Elankaspis Egorova 1976 [synonym], Fatocephalus Duan and An 1982 [synonym]
G. †Pugilator Nikolaisen 1991
+
†Pugilator deckeri Cooper 1953
†Pugilator yukonensis Churkin 1966
G. †Remopleuridiella Ross 1951
+
Subfm. †Remopleuridinae Hawle and Corda 1847
+
G. †Amphitryon Hawle and Corda 1874
+
†Amphitryon constrictus Wei et al. 2023
†Amphitryon murchisoni Hawle and Corda 1847
†Amphitryon murchisonii Hawle and Corda 1847
+
Invalid names: Caphyra radians Barrande 1846 [synonym]
G. †Remopleurella Dean 1963
+
†Remopleurella burmeisteri Bancroft 1949
G. †Remopleurides Portlock 1843
+
†Remopleurides acer Webby 1973
†Remopleurides affluens Nikolaisen 1983
†Remopleurides arenosus Lespérance and Weissenberger 1998
†Remopleurides asperulus Whittington 1959
†Remopleurides caelatus Whittington 1959
†Remopleurides canadensis Billings 1865
†Remopleurides caphyroides Whittington 1959
†Remopleurides colbii Portlock 1843
†Remopleurides deani Nikolaisen 1983
†Remopleurides emarginatus Törnquist 1884
†Remopleurides epimera Tripp 1980
†Remopleurides exallos Webby 1973
†Remopleurides eximius Whittington 1959
†Remopleurides granensis Stormer 1945
†Remopleurides inusitatus Nikolaisen 1983
†Remopleurides laevigatus Nikolaisen 1983
†Remopleurides latus Olin 1906
†Remopleurides ligulus Whittington 1963
†Remopleurides lunnerensis Nikolaisen 1983
†Remopleurides minimus Warburg 1925
†Remopleurides occidens Phleger, Jr. 1933
†Remopleurides panderi Billings 1865
†Remopleurides pattersoni Chatterton and Ludvigsen 1976
†Remopleurides paucus Nikolaisen 1983
†Remopleurides perspicax Nikolaisen 1983
†Remopleurides pilulus Whittington 1965
†Remopleurides plaesiourus Whittington 1959
†Remopleurides saenuros Webby 1973
†Remopleurides simulus Whittington 1959
†Remopleurides striatus Cooper and Kindle 1936
†Remopleurides variolaris Nikolaisen 1983
G. †Robergia Wiman 1905
+
†Robergia barrandii Nicholson and Etheridge 1879
†Robergia major Raymond 1920
†Robergia microphthalma Linnarsson 1875
†Robergia microphthalmus Linnarsson 1875
†Robergia scanica Hadding 1913
†Robergia schlotheimi Billings 1865
†Robergia sinensis Lu and Chang 1974
†Robergia sparsa Nikolaisen 1983
†Robergia striatella Nikolaisen 1991
G. †Sculptella Nikolaisen 1952
+
†Sculptella angustilingua Nikolaisen 1983
†Sculptella nonscripta Nikolaisen 1983
†Sculptella scripta Nikolaisen 1983
†Sculptella scriptoides Nikolaisen 1983
Invalid names: Hypodicranotinae Pribyl and Vanel 1972 [synonym]
G. †Richardsonella Raymond 1924
+
†Richardsonella convexa Rasetti 1944
†Richardsonella cristata Billings 1860
†Richardsonella elongata Rasetti 1944
†Richardsonella megalops Billings 1860
†Richardsonella unisulcata Rasetti 1944
†Richardsonella variagranula Robison and Pantoja-Alor 1968
G. †Robergiella Whittington 1959
+
†Robergiella brevilingua Fortey 1980
†Robergiella correcta Reed 1903
†Robergiella neteorum Tripp 1980
†Robergiella sagittalis Whittington 1959
†Robergiella tjernviki Hoel 1999
G. †Scinocephalus Ross 1951
+
G. †Sigmakainella Shergold 1971
+
†Sigmakainella longilira Shergold 1971
†Sigmakainella translira Shergold 1971
G. †Sunocavia Özdikmen 2009
+
†Sunocavia dactyloides Guo and Duan 1978
Invalid names: Cavia Sun 1993 [replaced]
G. †Tramoria Reed 1899
G. †Yosimuraspis Kobayashi 1960
Invalid names: Kainellidae Ulrich and Resser 1930 [invalid subgroup], Richardsonellidae Raymond 1924 [invalid subgroup]
Superfm. †Cyclopygoidea Raymond 1925
+
Fm. †Cyclopygidae Raymond 1925
+
G. †Amicus Koroleva 1967
G. †Aspidaeglina Holub 1911
G. †Circulocrania Fortey and Owens 1987
G. †Cyclopyge Hawle and Corda 1847
+
†Cyclopyge recurva Lu 1962
+
Invalid names: Cyclopyge binodosa Zhang 1981 [synonym]
†Cyclopyge vigilans Cooper and Kindle 1936
Invalid names: Aeglina Barrande 1850 [objective synonym]
G. †Degamella Marek 1961
G. †Ellipsotaphrus Whittard 1952
G. †Emmrichops Marek 1961
G. †Gastropolus Whittard 1966
G. †Girvanopyge Kobayashi 1960
+
Invalid names: Cremastoglottos Whittard 1961 [synonym], Nanlingia Wei and Zhou 1983 [synonym]
G. †Microparia Hawle and Corda 1847
+
Subg. †Microparia (Heterocyclopyge) Marek 1961
+
†Heterocyclopyge pachycephala Hawle and Corda 1847
+
Invalid names: Selenoptychus rotundatus Hawle and Corda 1847 [synonym]
†Microparia (Heterocyclopyge) insolens Schuchert and Cooper 1930
†Microparia (Heterocyclopyge) kindlei Schuchert and Cooper 1930
Subg. †Microparia (Microparia) Hawle and Corda 1847
+
Invalid names: Microparia (Paramicroparia) Zhang 1981 [synonym]
Subg. †Microparia (Quadratapyge) Zhou in Zhou et al 1977
+
†Microparia (Quadratapyge) latilimbata Zhou in Zhou et al 1977
†Microparia grandis Salter and in Murchison 1859
G. †Novakella Whittard 1961
+
Invalid names: Incisopyge Pillet and Courtessole 1985 [synonym]
G. †Phylacops Cooper and Kindle 1936
+
Subfm. †Pricyclopyginae Fortey and Owens 1987
+
G. †Pricyclopyge Richter and Richter 1954
+
†Pricyclopyge gallica Tjernvik 1956
†Pricyclopyge oceanitis Mergl 2006
†Pricyclopyge prisca Barrande 1872
†Pricyclopyge synophthalma Kloucek 1916
Invalid names: Bicyclopyge Horbinger and Vanek 1985 [synonym]
G. †Prospectatrix Fortey 1981
+
†Prospectatrix genatenta Stubblefield and Bulman 1927
G. †Psilacella Whittard 1952
G. †Sagavia Koroleva 1967
+
†Sagavia laxa Zhou et al. 2014
G. †Selenoptychus Hawle and Corda 1847
G. †Symphysops Raymond 1925
+
†Symphysops armatus Barrande 1872
†Symphysops djebaglensis Kolova 1936
G. †Xenocyclopyge Lu 1962
Invalid names: Bohemillidae Barrande 1872 [invalid subgroup]
Fm. †Nileidae Angelin 1854
+
G. †Aocaspis Dolambi and Gond 1992
G. †Barrandia M'Coy 1849
+
†Barrandia homfrayi Hicks 1875
†Barrandia mccoyi Walcott 1884
G. †Berkutaspis Lisogor 1947
G. †Borthaspidella Rasetti 1954
+
†Borthaspidella gaspensis Rasetti 1954
G. †Bumastides Veber 1948
G. †Elongatanileus Ji 1986
G. †Homalopteon Salter 1867
G. †Illaenopsis Salter 1865
+
†Illaenopsis stenorhachis Harrington 1938
†Illaenopsis thomsoni Salter 1866
Invalid names: Rokycania Pribyl and Vanek 1965 [synonym]
G. †Kodymaspis Prantl and Pribyl 1950
+
†Kodymaspis limena Šnajdr 1984
G. †Lakaspis Kobayashi 1937
G. †Neopsilocephalina Yin 1978
†Nileidae stenorhachis Harrington 1938
G. †Nileus Dalman 1827
+
†Nileus affinis Billings 1865
†Nileus amplus Zhou et al. 2014
†Nileus armadillo Dalman 1826
†Nileus australis Tortello and Esteban 2014
†Nileus cingolanii Tortello and Esteban 2016
†Nileus depressus Boeck 1838
†Nileus deynouxi Destombes et al. 1969
†Nileus erici Tortello and Esteban 2016
†Nileus exarmatus Tjernvik 1956
†Nileus exarmatus lineatus Schrank 1972
†Nileus gabata Dean 1973
†Nileus glazialis Schrank 1973
†Nileus hesperaffinis Ross and Barnes 1967
†Nileus lacunosa Whittington 1965
†Nileus macrops Billings 1865
†Nileus orbiculatoides Schrank 1972
†Nileus orbiculatus Tjernvik 1956
†Nileus petilus Xia 1978
†Nileus planiceps Nielsen 1995
†Nileus porosus Fortey 1975
†Nileus scrutator Billings 1865
†Nileus walcotti Endo 1932
+
Invalid names: Nileus liangshanensis Lu 1975 [synonym]
Invalid names: Remopleuridioides Harrington and Leanza 1957 [synonym]
G. †Parabarrandia Prantl and Pribyl 1949
G. †Paraperaspis Zhou et al. 2014
+
†Paraperaspis angustus Zhou et al. 2014
+
Invalid names: Nileus transversus Zhang 1981 [synonym]
†Paraperaspis dawangouensis Zhou et al. 2014
G. †Peraspis Whittington 1965
+
†Peraspis erugata Ross 1970
†Peraspis kolouros Norford and Ross 1978
†Peraspis lineolata Raymond 1925
†Peraspis omega Fortey 1975
†Peraspis yukonensis Dean 1973
G. †Petrbokia Pribyl and Vanek 1965
G. †Platypeltoides Pribyl 1949
+
Subg. †Platypeltoides (Troedssonia) Poletaeva 1960
+
†Platypeltoides croftii Callaway 1877
†Platypeltoides perseis Mergl 2006
Invalid names: Platypeltis Callaway 1877 [replaced]
G. †Poronileus Fortey 1975
+
†Poronileus fistulosus Fortey 1975
†Poronileus isoteloides Fortey 1975
†Poronileus jugatus Fortey 1975
†Poronileus vallancei Fortey 1975
G. †Psilocephalinella Kobayashi 1951
+
Invalid names: Borthaspis Stubblefield 1951 [objective synonym]
G. †Shenjiawania Peng 1984
G. †Symphysurina Ulrich 1924
+
†Symphysurina brevis Fortey 1983
†Symphysurina bulbosa Lochman 1964
†Symphysurina elegans Poulsen 1937
†Symphysurina goniura Billings 1860
†Symphysurina myopia Westrop and in Landing et al 2003
†Symphysurina robusta Poulsen 1937
†Symphysurina spicata Ulrich in Walcott 1925
†Symphysurina uncaspicata Hintze 1953
†Symphysurina walcotti Kindle 1929
+
Invalid names: Symphysurina brevispicata Hintze 1953 [synonym]
†Symphysurina woosteri Ulrich and Walcott 1924
G. †Symphysurus Goldfuss 1843
+
†Symphysurus angustatus Sars and Boeck 1838
+
Invalid names: Symphysurus socialis Linnarsson 1869 [synonym]
†Symphysurus arcticus Fortey 1975
†Symphysurus goldfussi Walcott 1884
†Symphysurus palpebrosus Barrande 1852
G. †Varvia Tjernvik 1956
+
†Varvia breviceps Angelin 1854
Fm. †Symphysurinidae Kobayashi 1955
+
G. †Eurysymphysurina Fortey and Bruton 2013
+
†Eurysymphysurina spora Fortey and Bruton 2013
G. †Randaynia Boyce 1989
+
†Randaynia langdoni Boyce 1989
†Randaynia saundersi Boyce 1989
Fm. †Taihungshaniidae Sun 1931
+
G. †Asaphellina Chalmas and Bergeron 1989
G. †Asaphopsis Mansuy 1920
G. †Omeipsis Kobayashi 1951
G. †Taihungshania Sun 1931
+
†Taihungshania miqueli Bergeron 1893
Invalid names: Miquelina Thoral 1935 [synonym]
G. †Tungtzuella Lu 1957
Superfm. †Dikelocephaloidea Miller 1889
+
Fm. †Dikelocephalidae Miller 1889
+
G. †Berkeia Resser 1937
+
†Berkeia glabellamersa Wilson 1949
†Berkeia typica Resser 1937
G. †Blandicephalus Palmer 1954
+
†Blandicephalus texanus Palmer 1954
G. †Briscoia Walcott 1924
+
†Briscoia angustilimba Westrop 1986
†Briscoia coloradoensis Walcott 1914
†Briscoia dalyi Walcott 1914
†Briscoia devinei Billings 1865
†Briscoia elegans Kobayashi 1935
+
Invalid names: Parabriscoia stenorachis Kobayashi 1935 [synonym]
†Briscoia llanoensis Winston and Nicholls 1967
†Briscoia nevadensis Resser 1937
†Briscoia pertransversa Lochman 1956
†Briscoia schucherti Ulrich and Resser 1930
†Briscoia septentrionalis Kobayashi 1935
+
Invalid names: Briscoia mertiei Kobayashi 1935 [synonym], Briscoia robusta Kobayashi 1935 [synonym]
†Briscoia sinclairensis Walcott 1924
Invalid names: Parabriscoia Kobayashi 1935 [synonym]
G. †Dikelocephalus Owen 1852
+
†Dicellocephalus bilobatus Hall and Whitfield 1877
†Dicellocephalus iole Walcott 1884
†Dicellocephalus marica Walcott 1884
†Dicellocephalus tribulus Walcott 1912
†Dikelocephalus halli Ulrich and Resser 1930
+
Invalid names: Dikelocephalus barretti Ulrich and Resser 1930 [synonym], Dikelocephalus beani Ulrich and Resser 1930 [synonym], Dikelocephalus brevis Ulrich and Resser 1930 [synonym], Dikelocephalus declivis Ulrich and Resser 1930 [synonym], Dikelocephalus edwardsi Ulrich and Resser 1930 [synonym], Dikelocephalus gracilis Ulrich and Resser 1930 [synonym], Dikelocephalus granosus Ulrich and Resser 1930 [synonym], Dikelocephalus hotchkissi Ulrich and Resser 1930 [synonym], Dikelocephalus inaequalis Ulrich and Resser 1930 [synonym], Dikelocephalus intermidius Ulrich and Resser 1930 [synonym], Dikelocephalus juvinalis Ulrich and Resser 1930 [synonym], Dikelocephalus marginatus Ulrich and Resser 1930 [synonym], Dikelocephalus norwalkensis Ulrich and Resser 1930 [synonym], Dikelocephalus orbiculatus Ulrich and Resser 1930 [synonym], Dikelocephalus ovatus Ulrich and Resser 1930 [synonym], Dikelocephalus oweni Ulrich and Resser 1930 [synonym], Dikelocephalus postrectus Ulrich and Resser 1930 [synonym], Dikelocephalus raaschi Ulrich and Resser 1930 [synonym], Dikelocephalus regalis Ulrich and Resser 1940 [synonym], Dikelocephalus retrorsus Ulrich and Resser 1930 [synonym], Dikelocephalus subplanus Ulrich and Resser 1930 [synonym], Dikelocephalus thwaitesi Ulrich and Resser 1930 [synonym], Dikelocephalus weidmani Ulrich and Resser 1930 [synonym], Dikelocephalus wiltonensis Ulrich and Resser 1930 [synonym], Dikelocephalus wisconsinensis Ulrich and Resser 1930 [synonym], Ogygia minnesotensis Chapman 1856 [synonym]
†Dikelocephalus wisconensis Ulrich and Resser 1930
G. †Elkia Walcott 1924
+
†Elkia nasuta Walcott 1884
G. †Monocheilus Resser 1937
+
†Monocheilus anatinum Hall 1863
†Monocheilus micros Walter 1926
G. †Neoiranella Özdikmen 2006
+
†Neoiranella latefrons King 1937
Invalid names: Iranella Hupe 1953 [replaced]
G. †Osceolia Walcott 1914
G. †Princetonella Lochman 1953
G. †Pterocephalops Rasetti 1944
+
G. †Randicephalus Ivshin 1962
G. †Stigmacephalus Resser 1937
+
†Stigmacephalus oweni Hall 1863
G. †Walcottaspis Ulrich and Resser 1930
+
†Walcottaspis vanhornei Walcott 1914
Invalid names: Saukiidae Ulrich and Resser 1930 [synonym]
Fm. †Ptychaspididae Raymond 1924
+
G. †Alborsella Kushan 1973
G. †Changia Sun 1924
+
†Changia chinensis Sun 1924
Invalid names: Coreanocephalus Kobayashi 1935 [synonym], Quadraticephalus Sun 1925 [synonym]
G. †Eoptychaspis Nelson 1951
G. †Eowuhuia Zhang and Wang 1984
G. †Euptychaspis Ulrich 1931
+
†Euptychaspis dougali Adrain and Westrop 2004
†Euptychaspis lawsonensis Adrain and Westrop 2005
G. †Idiomesus Raymond 1924
+
†Idiomesus levisensis Rasetti 1944
G. †Imlerella Loch and Taylor 2004
G. †Kathleenella Ludvigsen 1982
G. †Keithia Raymond 1924
+
†Keithia similis Rasetti 1944
†Keithia subclavatus Billings 1860
G. †Keithiella Rasetti 1944
+
†Keithiella brevis Rasetti 1944
†Keithiella cylindrica Billings 1860
†Keithiella depressa Rasetti 1944
G. †Macronoda Lochmann 1964
+
†Macronoda notchpeakensis Adrain and Westrop 2005
†Macronoda punctata Loch et al. 1993
Invalid names: Promesus Lochman 1964 [synonym]
G. †Plectrella Ludvigsen and Westrop 1989
G. †Proricephalus Westrop 1986
G. †Ptychaspis Hall 1863
+
†Ptychaspis granulosa Owen 1852
†Ptychaspis minuta Whitfield 1878
†Ptychaspis pustulosa Hall and Whitfield 1877
†Ptychaspis tuberosa Feniak 1952
Invalid names: Asioptychaspis Kobayashi 1933 [synonym]
G. †Saukioides Kobayashi 1952
+
Invalid names: Jeholaspis Kobayashi 1953 [objective synonym]
G. †Sunwaptia Westrop 1986
+
†Sunwaptia plutoi Adrain and Westrop 2004
G. †Wilcoxaspis Westrop 1986
Invalid names: Dikelocephaliidae Miller 1889 [empty]
Fm. †Eurekiidae Hupé 1953
+
G. †Arcadiaspis Westrop et al. 2005
G. †Bandalaspis Ivshin 1962
G. †Bayfieldia Clark 1924
+
†Bayfieldia tumifrons Clark 1924
G. †Corbina
G. †Corbinia Walcott 1924
+
†Corbinia horatio Walcott 1924
+
Invalid names: Corbinia valida Walcott 1925 [synonym]
†Corbinia implumis Winston and Nicholls 1967
G. †Eurekia Walcott 1924
+
†Eurekia apopsis Winston and Nicholls 1967
†Eurekia plectocanthus Loch et al. 1993
†Eurekia rintintini Adrain and Westrop 2004
G. †Leocephalus Ivshin 1962
G. †Lochmanaspis Ivshin 1962
G. †Magnacephalus Stitt 1971
G. †Maladia Rose 1983
G. †Tostonia Walcott 1924
Fm. †Hungaiidae Raymond 1924
+
G. †Asaphopsoides Hupé 1953
+
†Asaphopsoides florentinensis Etheridge 1905
+
Invalid names: Asaphopsis gracicostatus Kobayashi 1940 [synonym], Asaphopsis juneensis Kobayashi 1940 [synonym]
Invalid names: Dainellicauda Kobayashi 1960 [synonym]
G. †Ciliocephalus Liu 1977
G. †Dactylocephalus Hsu 1948
G. †Dikelocephalopsis Poletaeva 1955
G. †Hungaia Walcott 1914
+
†Hungaia magnifica Billings 1860
†Hungaia peladensis Rusconi 1953
†Hungaia puelchana Rusconi 1953
Invalid names: Acrohybus raymond 1937 [synonym]
G. †Hungioides Kobayashi 1936
+
†Hungioides acutinasus Fortey and Shergold 1984
†Hungioides intermedia Harrington and Leanza 1957
Invalid names: Argentinops Pribyl and Vanĕk 1980 [synonym]
G. †Leimitzia Sdzuy 1955
G. †Songtaoia Yin 1978
Invalid names: Dikelokephalinidae Kobayashi 1936 [invalid subgroup]
Fm. †Ordosiidae Lu 1954
+
G. †Kontrastina Rozova 1964
+
†Kontrastina samodiica Rozova 1964
G. †Ordosia Lu 1954
G. †Paralevisia Zhang and Jell 1987
G. †Poshania Chang 1959
G. †Taitzuia Resser and Endo 1935
+
†Taitzuia abnormis Zhang et al. 1980
G. †Taitzuina Zhang and Yuan 1981
+
†Taitzuina lubrica Zhang and Yuan 1981
G. †Parabumastides Ji 1987
Fm. †Remopleuridae Hawle and Corda 1847
+
G. †Atratebia Shergold 1975
+
†Atratebia nexosa Shergold 1975
G. †Teratorhynchus Reed 1903
Fm. †Rhyssometopidae Oepik 1967
+
G. †Plectrifer Opik 1967
G. †Qiandongaspis Yuan and Yin 1998
+
†Qiandongaspis qiandongensis Yuan and Yin 1998
G. †Rhyssometopus Oepik 1967
+
G. †Rhyssometropus Opik 1967
G. †Tasmana Jago et al. 2004
+
†Tasmana truncata Jago et al. 2004
Invalid names: Pseudocyclopyge [nomen nudum], Trinucleoidea Hawle and Corda 1847 [empty]
Diagnosis
ReferenceDiagnosis
R. A. Fortey 1990Libristoma having ventral median suture. Only primitive forms retain natant hypostomal condition, the majority of the group being conterminant or impendent. Higher Asaphida also have a distinctive inflated protaspis - the asaphoid protaspis.